# e vs NNAT Test Prep

The clearest difference is in-app purchases: e at none against NNAT Test Prep's 2. e also leads on update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NNAT Test Prep sells 2 in-app purchases, starting at $2.99 per month. e asks for nothing beyond the download.

e ships an update every 3 days, NNAT Test Prep every 2 weeks. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | e | NNAT Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/nnat-test-prep/id6783057343/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 41 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gerege Systems LLC](https://appshunter.io/developer/1437211863) | [Neobile LLC](https://appshunter.io/developer/1080490647) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-id-mongolia/id6773038939)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### NNAT Test Prep

[App page](https://appshunter.io/ios/app/nnat-test-prep/id6783057343)

This app helps children in kindergarten through 5th grade develop visual reasoning skills with original picture puzzles and clear explanations. It offers grade-based practice, detailed parent reports, and the ability to revisit missed questions to build confidence and understanding.

**Highlights:** Original visual reasoning puzzles, Clear explanations for each question, Grade-based practice sessions, Detailed parent reports, Offline practice mode, Timed practice tests, Bilingual support (English/Spanish)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Membership Monthly | $2.99 | per month |
| Pro Membership Yearly | $9.99 | per year |


## Frequently asked questions

### Is e free?

e is free to download, with no in-app purchases.

### Is NNAT Test Prep free?

NNAT Test Prep is free to download, with in-app purchases available.

### Do e or NNAT Test Prep have ads?

Neither e nor NNAT Test Prep shows ads.

### Which is updated more often, e or NNAT Test Prep?

e ships an update every 3 days, and NNAT Test Prep every 2 weeks. Most recently, e was updated on October 13, 2026 and NNAT Test Prep on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*